US9715603B1 - Smart card connector - Google Patents

Smart card connector Download PDF

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Publication number
US9715603B1
US9715603B1 US15/168,966 US201615168966A US9715603B1 US 9715603 B1 US9715603 B1 US 9715603B1 US 201615168966 A US201615168966 A US 201615168966A US 9715603 B1 US9715603 B1 US 9715603B1
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United States
Prior art keywords
smart card
contact
receiving slot
contacts
connector according
Prior art date
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Active
Application number
US15/168,966
Inventor
Davey Faoro
Christian Eric Schulz
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Verifone Inc
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Verifone Inc
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Publication date
Application filed by Verifone Inc filed Critical Verifone Inc
Priority to US15/168,966 priority Critical patent/US9715603B1/en
Assigned to VERIFONE, INC. reassignment VERIFONE, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FAORO, Davey, SCHULZ, CHRISTIAN ERIC
Priority to CN201710371329.2A priority patent/CN107453068B/en
Priority to BR122020010433A priority patent/BR122020010433A8/en
Priority to BR102017011238-1A priority patent/BR102017011238A2/en
Priority to EP22157228.2A priority patent/EP4030336A1/en
Priority to EP17173858.6A priority patent/EP3252654B1/en
Priority to EP17173857.8A priority patent/EP3252653B1/en
Priority to US15/627,972 priority patent/US9886601B2/en
Publication of US9715603B1 publication Critical patent/US9715603B1/en
Application granted granted Critical
Assigned to JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT reassignment JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HYPERCOM CORPORATION, VERIFONE, INC.
Assigned to HYPERCOM CORPORATION, VERIFONE, INC. reassignment HYPERCOM CORPORATION RELEASE (R045575F0019) Assignors: JPMORGAN CHASE BANK, N.A.
Assigned to CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH AS COLLATERAL AGENT reassignment CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH AS COLLATERAL AGENT FIRST LIEN PATENT SECURITY AGREEMENT Assignors: HYPERCOM CORPORATION, VERIFONE, INC.
Assigned to CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH AS COLLATERAL AGENT reassignment CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH AS COLLATERAL AGENT SECOND LIEN PATENT SECURITY AGREEMENT Assignors: HYPERCOM CORPORATION, VERIFONE, INC.
Assigned to VERIFONE, INC., HYPERCOM CORPORATION, VERIFONE SYSTEMS, INC. reassignment VERIFONE, INC. RELEASE OF SECURITY INTEREST RECORDED AT REEL/FRAME 46920/0817 Assignors: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/0013—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers
    • G06K7/0021—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers for reading/sensing record carriers having surface contacts
    • G06K7/0026—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers for reading/sensing record carriers having surface contacts the galvanic contacts of the connector adapted for landing on the contacts of the card upon card insertion
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/04—Methods or arrangements for sensing record carriers, e.g. for reading patterns by mechanical means, e.g. by pins operating electric contacts
    • G06K7/042—Methods or arrangements for sensing record carriers, e.g. for reading patterns by mechanical means, e.g. by pins operating electric contacts controlling electric circuits
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/0013—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers
    • G06K7/0056—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers housing of the card connector
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/0013—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers
    • G06K7/0056—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers housing of the card connector
    • G06K7/0078—Methods or arrangements for sensing record carriers, e.g. for reading patterns by galvanic contacts, e.g. card connectors for ISO-7816 compliant smart cards or memory cards, e.g. SD card readers housing of the card connector reinforced housing for protection against damage, be it due malevolent action, such as drilling and other ways of forced entry, or by accident, such as shock due to dropping
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/06—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means which conduct current when a mark is sensed or absent, e.g. contact brush for a conductive mark
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6683—Structural association with built-in electrical component with built-in electronic circuit with built-in sensor

Definitions

  • the present invention relates to data entry devices generally, particularly to point of sale terminals and more particularly to smart card connector assemblies for point of sale terminals.
  • the present invention seeks to provide improved smart card connector assemblies for point of sale terminals.
  • a smart card connector including a housing defining a smart card receiving slot communicating with a smart card ingress slit formed in the housing, a plurality of smart card contacts mounted within the housing and being configured for reading contact with a smart card inserted into the smart card receiving slot and a movable smart card contact mounting assembly supporting at least one of the plurality of smart card contacts and for positioning the at least one of the plurality of smart card contacts in a first position, in the absence of a smart card in the smart card receiving slot, and in a second position, different from the first position, when a smart card is fully inserted in the smart card receiving slot, wherein when the at least one of the plurality of smart card contacts is in the first position it is relatively inaccessible to tampering via the smart card ingress slit.
  • the at least one of the plurality of smart card contacts is an I/O contact. Additionally or alternatively, the at least one of the plurality of smart card contacts is configured to be without a hook engageable surface so as to be resistant to engagement therewith and pulling thereof by a tampering instrument inserted into the smart card ingress slit.
  • the smart card connector also includes a smart card contact position sensor operative to sense when the at least one of the plurality of smart card contacts are in the second position. Additionally or alternatively, when the at least one of the plurality of smart card contacts is in the second position it is adapted for physical electrical engagement with contact pads on the smart card.
  • the smart card connector also includes a smart card insertion sensor operative to sense when a smart card is fully inserted into the smart card receiving slot. Additionally or alternatively, the smart card connector also includes tamper alarm circuitry operative to provide a tamper alarm indication in response to an output of the smart card contact position sensor indicating that at least one of the plurality of smart card contacts is in the second position orientation in the absence of a smart card fully inserted into the smart card receiving slot.
  • the smart card connector also includes a smart card contact position sensor operative to sense when the I/O contact is in the second position.
  • the smart card connector also includes a smart card insertion sensor operative to sense when a smart card is fully inserted into the smart card receiving slot and tamper alarm circuitry operative to provide a tamper alarm indication in response to an output of the smart card contact position sensor indicating that the I/O contact is in the second position orientation in the absence of a smart card fully inserted into the smart card receiving slot.
  • a smart card connector including a housing defining a smart card receiving slot communicating with a smart card ingress slit formed in the housing and a plurality of smart card contacts mounted within the housing and being configured for reading contact with a smart card inserted into the smart card receiving slot, at least one of the plurality of smart card contacts being configured without a hook engageable surface so as to be resistant to engagement therewith and pulling thereof by a tampering instrument inserted into the smart card ingress slit.
  • the at least one of the plurality of smart card contacts is an I/O contact.
  • the smart card connector also includes a smart card contact position sensor operative to sense when the I/O contact is in a card reading position.
  • the smart card connector also includes a smart card contact position sensor operative to sense when the at least one of the plurality of smart card contacts are in a card reading position.
  • the at least one of the plurality of smart card contacts when the at least one of the plurality of smart card contacts is in a card reading position it is adapted for physical electrical engagement with contact pads on the smart card.
  • the smart card connector also includes a smart card insertion sensor operative to sense when a smart card is fully inserted into the smart card receiving slot. Additionally, the smart card connector also includes tamper alarm circuitry operative to provide a tamper alarm indication in response to an output of the smart card contact position sensor indicating that at least one of the plurality of smart card contacts is in the card reading position in the absence of a smart card fully inserted into the smart card receiving slot.
  • the smart card connector also includes a smart card contact position sensor operative to sense when the I/O contact is in the card reading position.
  • the smart card connector also includes a smart card insertion sensor operative to sense when a smart card is fully inserted into the smart card receiving slot and tamper alarm circuitry operative to provide a tamper alarm indication in response to an output of the smart card contact position sensor indicating that the I/O contact is in the card reading position in the absence of a smart card fully inserted into the smart card receiving slot.
  • a smart card connector including a housing defining a smart card receiving slot communicating with a smart card ingress slit formed in the housing, a plurality of smart card contacts mounted within the housing and being configured for reading contact with a smart card inserted into the smart card receiving slot, at least one of the plurality of smart card contacts being movable from a relatively non-tamperable position to a relatively tamperable position, a smart card contact position sensor operative to sense when the plurality of smart card contacts are in the tamperable orientation and tamper alarm circuitry operative to provide a tamper alarm indication in response to an output of the smart card contact position sensor indicating that the plurality of smart card contacts are in the tamperable orientation in the absence of a smart card fully inserted into the smart card receiving slot.
  • the at least one of the plurality of smart card contacts is an I/O contact.
  • the at least one of the plurality of smart card contacts is configured to be without a hook engageable surface so as to be resistant to engagement therewith and pulling thereof by a tampering instrument inserted into the smart card ingress slit.
  • the smart card connector also includes a smart card contact position sensor operative to sense when the at least one of the plurality of smart card contacts are in the tamperable orientation. Additionally or alternatively, when the at least one of the plurality of smart card contacts is in the tamperable orientation it is adapted for physical electrical engagement with contact pads on the smart card.
  • the smart card connector also includes a smart card insertion sensor operative to sense when a smart card is fully inserted into the smart card receiving slot.
  • FIG. 1 is a simplified pictorial illustration of a point of sale terminal constructed and operative in accordance with a preferred embodiment of the present invention
  • FIGS. 2A, 2B, 2C, 2D, 2E, 2F and 2G are simplified drawings including, respectively, a perspective view, a top planar view, a bottom planar view, a first side planar view, a second side planar view, a front planar view and a back planar view of a smart card connector assembly constructed and operative in accordance with a preferred embodiment of the invention, which forms part of the point of sale terminal of FIG. 1 and includes an optical sensor;
  • FIGS. 3A and 3B are simplified exploded view illustrations, taken generally in mutually opposite directions, of the smart card connector assembly of FIGS. 2A-2G ;
  • FIGS. 4A, 4B, 4C, 4D, 4E, 4F, 4G and 4H are simplified drawings including, respectively, a perspective view, a top planar view, a bottom planar view, an upwardly-facing interior sectional view, taken along lines IVD-IVD in FIG. 4A , a first side planar view, a second side planar view, a front planar view and a back planar view of a base element forming part of the smart card connector of FIGS. 2A-3B ;
  • FIGS. 5A, 5B, 5C, 5D, 5E, 5F and 5G are simplified drawings including, respectively, a perspective view, a top planar view, a bottom planar view, a first side planar view, a second side planar view, a front planar view and a back planar view of a contact block assembly forming part of the smart card connector of FIGS. 2A-3B ;
  • FIGS. 6A and 6B are simplified exploded view illustrations, taken generally in mutually opposite directions, of the contact block assembly of FIGS. 5A-5G ;
  • FIGS. 7A, 7B, 7C, 7D, 7E, 7F and 7G are simplified drawings including, respectively, a perspective view, a top planar view, a bottom planar view, a first side planar view, a second side planar view, a front planar view and a back planar view of an electrical contact element forming part of the contact block assembly of FIGS. 5A-6B ;
  • FIGS. 8A, 8B, 8C, 8D, 8E, 8F and 8G are simplified drawings including, respectively, a perspective view, a top planar view, a bottom planar view, a first side planar view, a second side planar view, a front planar view and a back planar view of an electrical contact element support forming part of the contact block assembly of FIGS. 5A-6B ;
  • FIGS. 9A, 9B and 9C are simplified drawings including, respectively, a perspective view, a top planar view and a bottom planar view of a flexible printed circuit element forming part of the contact block assembly of FIGS. 5A-6B ;
  • FIGS. 10A, 10B, 10C, 10D, 10E, 10F and 10G are, respectively, a perspective view, a top planar view, a bottom planar view, a first side planar view, a second side planar view, a front planar view and a back planar view of a cam path defining element forming part of the contact block assembly of FIGS. 5A-6B ;
  • FIGS. 11A, 11B, 11C, 11D, 11E, 11F and 11G are simplified drawings including, respectively, a perspective view, a top planar view, a bottom planar view, a first side planar view, a second side planar view, a front planar view and a back planar view of an actuation arm forming part of the smart card connector of FIGS. 2A-3B ;
  • FIGS. 12A and 12B are simplified perspective view illustrations illustrating a transition of the smart card connector of FIGS. 1-11G from a card not inserted state to a card fully inserted state;
  • FIGS. 13A and 13B are simplified perspective view illustrations illustrating a transition of an alternative embodiment of the smart card connector of FIGS. 1-11G from a card not inserted state to a card fully inserted state.
  • FIG. 1 is a simplified pictorial illustration of a point of sale terminal constructed and operative in accordance with a preferred embodiment of the present invention.
  • a point of sale device 100 which includes a housing 102 , a keypad 104 and a display 106 .
  • the housing 102 defines a magnetic stripe card reading slot 108 and a smart card ingress slit 110 which communicates with a smart card receiving slot 112 .
  • secure smart card connector assembly 120 Disposed within housing 102 is a secure smart card connector assembly 120 , which is preferably mounted on a printed circuit board 122 . It is a particular feature of the present invention that secure smart card connector assembly 120 includes an anti-tampering mechanism which minimizes exposure of smart card reading contacts to physical tampering and preferably also provides a warning of attempted tampering with the smart card reading contacts.
  • this anti-tampering mechanism includes a smart card contact position sensor 130 , such as an optical sensor or a mechanical sensor, which is operative to sense when the smart card contacts are in a tamperable orientation. Smart card contact position sensor 130 may be, for example, mechanical or optical.
  • the anti-tampering mechanism also includes a card full insertion sensor 132 (shown in dashed lines in FIG. 1 ), which is operative to sense when a card is not fully inserted into smart card receiving slot 112 .
  • the anti-tampering mechanism also includes a tamper alarm circuit 134 , operative to provide a tamper alarm indication in response to outputs of the smart card contact position sensor 130 and of the card full insertion sensor 132 , indicating that the plurality of smart card contacts are in the tamperable orientation in the absence of a smart card fully inserted into said smart card receiving slot 112 .
  • Tamper alarm circuit 134 may be embodied in a microprocessor which forms part of a point of sale device and governs the operation thereof.
  • FIGS. 2A, 2B, 2C, 2D, 2E, 2F and 2G are simplified drawings including, respectively, a perspective view, a top planar view, a bottom planar view, a first side planar view, a second side planar view, a front planar view and a back planar view of the smart card connector assembly 120 , which forms part of the point of sale terminal of FIG. 1 , and to FIGS. 3A and 3B , which are simplified exploded view illustrations, taken generally in mutually opposite directions, of the smart card connector assembly 120 of FIGS. 2A-2G .
  • the smart card connector assembly 120 includes a base element 150 , a contact block assembly 160 , which is pivotably mounted onto base element 150 and biased by a leaf spring 162 , a contact block assembly position sensor 164 , which is an embodiment of contact position sensor 130 ( FIG. 1A ), and which senses the position of the contact block assembly 160 relative to base element 150 , and an actuation arm 170 , biased by a tension coil spring 172 , which governs the position of the contact block assembly 160 relative to base element 150 in response to the presence of a smart card in smart card receiving slot 112 .
  • Contact block assembly position sensor 164 senses the rotational position of actuation arm 170 , which in turn governs the pivotal orientation of the contact block assembly 160 , and is typically an optical sensor 164 as shown.
  • contact position sensor 130 may be a mechanical sensor or any other suitable type of sensor.
  • FIGS. 4A, 4B, 4C, 4D, 4E, 4F, 4G and 4H are simplified drawings including, respectively, a perspective view, a top planar view, a bottom planar view, an upwardly-facing interior sectional view, taken along lines IVD-IVD in FIG. 4A , a first side planar view, a second side planar view, a front planar view and a back planar view of base element 150 , forming part of the smart card connector assembly 120 of FIGS. 2A-3B .
  • base element 150 is a generally rectangular element having a top wall portion 200 , a bottom wall portion 210 , first and second side wall portions 220 and 230 , a rear wall portion 240 and a front wall portion 250 , which defines a smart card access slit 252 which lies behind and is aligned with smart card ingress slit 110 ( FIG. 1 ) and leads to smart card receiving slot 112 , which is defined by interior surfaces of top wall portion 200 , bottom wall portion 210 , first and second side wall portions 220 and 230 and rear wall portion 240 .
  • top wall portion 200 includes a central aperture 254 , a first side aperture 260 and a second side aperture 270 .
  • Top wall portion 200 also includes a relatively long slit aperture 272 and a pair of relatively short slit apertures 274 and 276 .
  • top wall portion 200 includes first, second, third and fourth upwardly facing tapered elongate recesses, respectively designated by reference numerals 278 , 280 , 282 and 284 .
  • top wall portion 200 includes first, second, third, fourth and fifth upwardly facing elongate recesses having rounded corners, respectively designated by reference numerals 288 , 290 , 292 , 294 and 296 .
  • top wall portion 200 additionally includes a plurality of relatively large square recesses 298 , arranged in a row, a plurality of relatively small square recesses 300 , a plurality of relatively large circular recesses 302 and a plurality of relatively small circular recesses 304 .
  • an upstanding wall portion 306 is provided and includes a central portion 308 , a pair of side portions 310 extending perpendicularly to central portion 308 , a pair of intermediate portions 312 extending mutually inwardly from respective side portions 310 , parallel to central portion 308 , and a pair of end portions 314 extending from intermediate portions 312 perpendicularly to central portion 308 .
  • Upstanding wall portion 306 defines a socket 315 , which accommodates leaf spring 162 .
  • bottom wall portion 210 includes four side apertures 350 , 352 , 354 and 356 .
  • Bottom wall portion 210 also includes a pair of mutually spaced U-shaped slits 360 and 362 , which surround respective integrally formed spring fingers 364 and 366 .
  • Bottom wall portion 210 additionally includes two pairs of mutually spaced parallel slits 370 and 372 which surround respective integrally formed elongate leaf springs 374 and 376 .
  • bottom wall portion 210 includes a pair of relatively short slit apertures 384 and 386 . Additionally, bottom wall portion 210 includes a plurality of additional apertures designated by reference numerals 388 , 390 , 392 , 394 , 396 , 398 , 400 and 402 .
  • Bottom wall portion 210 includes first, second, third, fourth, fifth and sixth downwardly facing elongate shallow protrusions, respectively designated by reference numerals 418 , 420 , 422 , 424 , 426 and 428 and four downwardly facing leg protrusions 430 .
  • a card full insertion sensor 132 ( FIG. 1 ), in the form of a card present switch assembly 440 , which preferably includes a resilient card engagement bent finger 442 .
  • Bent finger 442 is preferably integrally formed with a generally planar mounting portion 446 , which is mounted onto an inside facing surface of top wall portion 200 of base element 150 .
  • Bent finger 442 is normally spaced from an electrically conductive contact 447 , preferably in the form of a dome, which is also mounted on an inside facing surface of top wall portion 200 , and overlies a pair of mutually spaced electrical conductor pads, preferably, respectively, a central disk 448 surrounded by a ring 449 , which is preferably electrically connected to contact 447 .
  • Disk 448 and ring 449 are preferably electrically connected by conductors (not shown) via respective edge contacts 450 and 452 ( FIG. 4C ) to tamper alarm circuit 134 , wherein closing of an electric circuit between disk 448 and ring 449 provides a smart card fully inserted output indication.
  • FIGS. 5A, 5B, 5C, 5D, 5E, 5F and 5G are simplified drawings including respectively a perspective view, a top planar view, a bottom planar view, a first side planar view, a second side planar view, a front planar view and a back planar view of contact block assembly 160 , forming part of the smart card connector of FIGS. 2A-3B , to FIGS. 6A and 6B , which are simplified exploded view illustrations, taken generally in mutually opposite directions, of the contact block assembly of FIGS. 5A-5G , and to FIGS. 7A-10B , which illustrate elements of the contact block assembly 160 .
  • contact block assembly 160 includes a plurality of electrical contact elements 500 , including at least one I/O contact 501 , which are flexibly seated in an electrical contact element support 502 and electrically connected, as by soldering, to corresponding contact pads 504 on a flexible printed circuit element 506 .
  • a cam path defining element 508 is supported on electrical contact element support 502 and overlies part of flexible printed circuit element 506 .
  • each electrical contact element 500 is a metal element, preferably formed by stamping, and preferably includes a contact pad portion 520 , which is configured for soldered attachment to a contact pad 504 on flexible printed circuit element 506 .
  • a bent-over tail portion 522 connects contact pad portion 520 to a smart card contact engageable portion 524 .
  • smart card contact engageable portion 524 is configured to be without a hook engageable surface, so as to be resistant to engagement therewith and pulling thereof by a tampering instrument inserted into the smart card ingress slit 110 ( FIG. 1 ).
  • Smart card contact engageable portion 524 is preferably a side to side symmetric, generally hollow portion having an overall partial disk-like configuration and having a curved outer surface 526 .
  • the curved outer surface 526 includes a curved, ribbon-like smart card contact engagement surface 530 , which extends from bent-over tail portion 522 to a forward end of a top edge 532 of smart card contact engageable portion 524 .
  • Smart card contact engagement surface 530 preferably has an overall circular configuration and preferably has a curved cross section, as seen in a sectional illustration forming part of FIG. 7A , taken along the lines A-A in FIG. 7A .
  • Curved outer surface 526 also includes a pair of curved side surfaces 534 alongside both sides of smart card contact engagement surface 530 . Curved outer surface 526 additionally includes a pair of generally flat side surfaces 536 , which extend between curved side surfaces 534 and top edge 532 .
  • electrical contact element support 502 is a generally planar element, preferably injection molded of plastic to define at a first end thereof a pivot axle 550 extending along a pivot axis 552 and including an array of elongate recesses 554 , preferably eight in number, each recess configured for accommodating an electrical contact element 500 .
  • Electrical contact element support 502 preferably defines at an end thereof opposite to that at which pivot axle 550 is located, a lip portion 560 , which is engaged on an underside surface 562 thereof by leaf spring 162 for normally urging electrical contact element support 502 and thus contact block assembly 160 and electrical contact elements 500 into an upwardly pivoted operative orientation, which is resistant to tampering, when a smart card is not fully inserted into smart card receiving slot 112 .
  • flexible printed circuit element 506 includes contact pads 504 on a main portion thereof 570 .
  • Flexible printed circuit element 506 also preferably includes an intermediate portion 572 and a tail portion 574 having formed adjacent an edge thereof an array of electrical contact pads 576 .
  • cam path defining element 508 is a generally planar element having a generally planar top surface 579 , which is formed with a partially recessed, partially protruding cam surface 580 .
  • Cam surface 580 includes three regions, a recessed region 582 having a uniform depth and a region 584 angled with respect to recessed region 582 and defining a ramp extending from recessed region 582 to a protruding region 586 , having a uniform height.
  • FIGS. 11A, 11B, 11C, 11D, 11E, 11F and 11G are simplified drawings including, respectively, a perspective view, a top planar view, a bottom planar view, a first side planar view, a second side planar view, a front planar view and a back planar view of actuation arm 170 , forming part of the smart card connector of FIGS. 2A-3B .
  • actuation arm 170 comprises first and second elongate arm portions 600 and 602 which extend in a first plane preferably at right angles to each other.
  • a pivot aperture 604 is located at the junction of arm portions 600 and 602 and is arranged for pivotable engagement with upwardly facing protrusion 316 of base element 150 .
  • Arm portion 600 terminates in a generally cylindrical payment card engagement protrusion 606 , which depends from arm portion 600 .
  • Arm portion 602 terminates at one end thereof in a cam arm portion 610 , which preferably extends generally perpendicular to arm portion 602 and parallel to arm portion 600 in a second plane, above and parallel to the first plane in which arm portions 600 and 602 are located.
  • cam arm portion 610 terminates in a depending tapered cam finger portion 612 having a generally planar cam engagement surface 614 , which is configured for slidable engagement with partially recessed, partially protruding cam surface 580 of cam path defining element 508 .
  • Arm portion 602 terminates at an opposite end thereof in a mechanical sensor toggle engagement finger portion 620 , which defines a recess 622 bordered by edge surfaces 624 , 626 and 628 .
  • Edge surface 628 is preferably in the form of a curved fingertip surface of a finger portion 630 .
  • edge surface 628 and part of edge surface 626 is an optical sensor selectable light reflecting finger portion 632 , which lies in a third plane, above and parallel to the first plane in which arm portions 600 and 602 are located and below and parallel to the second plane in which cam portion 610 is located, and extends generally parallel to arm portions 600 and 610 .
  • FIGS. 12A and 12B are simplified perspective view illustrations illustrating a transition of the smart card connector of FIGS. 1-11G from a card not inserted state to a card fully inserted state.
  • actuation arm 170 is in its at rest position, as seen in FIG. 2A , and light reflecting finger portion 632 does not overlie the optical sensor 164 and thus does not reflect light emitted thereby by an LED 692 to a detector 694 thereof, as seen particularly in enlargement A, which shows a simplified section of optical sensor 164 and a light beam emanating therefrom which is not reflected by finger portion 632 .
  • optical sensor 164 is in a first logic state, which indicates to tamper alarm circuit 134 that card engagement contacts 500 , and specifically at least one I/O contact 501 , are in a retracted operative orientation.
  • the card present switch assembly 440 In the absence of a card in smart card receiving slot 112 , the card present switch assembly 440 is in its at rest position, as seen in FIG. 4D , and the bent finger 442 is spaced from electrically conductive contact 447 , as seen particularly in enlargement B, which shows a simplified cross section of the bent finger 442 and electrically conductive contact 447 . Bent finger 442 is not resiliently displaced into deforming engagement with electrically conductive contact 447 , and central disk 448 is not in electrical contact with ring 449 causing a smart card not inserted output indication to be provided to tamper alarm circuit 134 .
  • actuation arm 170 In the absence of a card in smart card receiving slot 112 , when actuation arm 170 is in its at rest position, the cam finger portion 612 of the actuation arm 170 is in engagement with recessed region 582 of cam surface 580 defined on cam path defining element 508 . When in this position, actuation arm 170 preferably does not exert any downward pressure on contact block assembly 160 , and thus contact block assembly 160 remains in its upwardly retracted operative orientation, as seen particularly in enlargement C, which is side view illustration, taken along lines C-C in FIG. 12A .
  • leaf spring 162 In the absence of a card in smart card receiving slot 112 , when actuation arm 170 is in its at rest position and the cam finger portion 612 of the actuation arm 170 is in engagement with recessed region 582 of cam surface 580 defined on cam path defining element 508 , leaf spring 162 is in its extended operative orientation, as seen particularly in enlargement D, which is a cross section taken along lines D-D in FIG. 12A . Leaf spring 162 engages underside surface 562 of lip portion 560 of electrical contact element support 502 and thereby urges electrical contact element support 502 , and thus contact block assembly 160 and electrical contact elements 500 , into their upwardly pivoted operative orientation, which is resistant to tampering.
  • FIG. 12B which shows the operative orientation of the secure smart card connector assembly 120 when a smart card 690 is fully inserted in smart card receiving slot 112 , actuation arm 170 is fully rotated in a clockwise rotation direction 700 about an actuation arm rotation axis 702 defined by protrusion 316 ( FIG. 4A ) which extends through pivot aperture 604 ( FIG. 11A ) from its at rest position, as seen in FIGS. 2A and 12A , to a fully rotated position seen in FIG. 12B .
  • optical sensor 164 When actuation arm 170 is in this fully rotated position, as seen particularly in enlargement A, light reflecting finger portion 632 overlies the optical sensor 164 and thus a light beam emanating from LED 692 of optical sensor 164 is reflected by finger portion 632 to detector 694 of optical sensor 164 . In this situation, optical sensor 164 is in a second logic state, which indicates to tamper alarm circuit 134 that card engagement contacts 500 , and specifically at least one I/O contact 501 , are in an extended operative orientation.
  • bent finger 442 When a smart card 690 is fully inserted into smart card receiving slot 112 , bent finger 442 is resiliently displaced into deforming engagement with electrically conductive contact 447 , as indicated by an arrow 710 , causing it to contact central disk 448 , as seen particularly in enlargement B, which shows a simplified cross section of the bent finger 442 and electrically conductive contact 447 . Accordingly, an electrical connection is made between disk 448 and ring 449 , and thus between edge contacts 450 and 452 , thereby providing a smart card fully inserted output indication to tamper alarm circuit 134 .
  • actuation arm 170 When a smart card 690 is fully inserted in smart card receiving slot 112 , and actuation arm 170 is in its fully rotated position, the cam finger portion 612 of the actuation arm 170 is in engagement with protruding region 586 of cam surface 580 defined on cam path defining element 508 . When in this position, actuation arm 170 preferably exerts downward pressure on contact block assembly 160 , and thus contact block assembly 160 is in its pivotally lowered operative orientation, as seen particularly in enlargement C, which is a side view illustration, taken along lines C-C in FIG. 12B .
  • actuation arm 170 When a smart card 690 is fully inserted in smart card receiving slot 112 , actuation arm 170 is in its fully rotated position and the cam finger portion 612 of the actuation arm 170 is in engagement with protruding region 586 of cam surface 580 defined on cam path defining element 508 .
  • Rotation of actuation arm 170 causes downward pivoting of electrical contact element support 502 which overcomes the upward force of leaf spring 162 and underside surface 562 of lip portion 560 of electrical contact element support 502 compresses leaf spring 162 into a compressed operative orientation, as seen particularly in enlargement D, which is a cross section taken along lines D-D. In the compressed operative orientation, access to electrical contact elements 500 is blocked by the smart card 690 , which is fully inserted into smart card receiving slot 112 .
  • contact block assembly 160 When a smart card 690 is fully inserted in smart card receiving slot 112 , contact block assembly 160 is in its pivotally lowered operative orientation and electrical contact elements 500 , and specifically at least one I/O contact 501 , are at least partly located within smart card receiving slot 112 and in engagement with contact pads 691 on the smart card 690 , as seen particularly in enlargement E, which is taken along arrow E. It is a particular feature of an embodiment of the present invention that only in the presence of a card in smart card receiving slot 112 , are the electrical contact elements 500 , and specifically at least one I/O contact 501 , lowered into conductive engagement with contact pads of the card, thereby making it difficult for a potential hacker to engage the electrical contact elements 500 .
  • FIGS. 13A and 13B are simplified perspective view illustrations illustrating a transition of the smart card connector of an alternative embodiment of the invention from a card not inserted state to a card fully inserted state.
  • the alternative embodiment of the invention is generally identical to that described hereinabove with reference to FIGS. 1-12B with the sole difference being that the optical sensor 164 is replaced by a mechanical sensor 764 having an engagement finger 766 .
  • actuation arm 170 is in its at rest position and engagement finger 766 of mechanical sensor 764 lies within recess 622 ( FIG. 11C ) of actuation arm 170 , as seen particularly in enlargement A, which shows a partially cut away top view of mechanical sensor 764 and recess 622 .
  • engagement finger 766 is in this orientation, mechanical sensor 764 is in a first logic state, which indicates to tamper alarm circuit 134 that card engagement contacts 500 , and specifically at least one I/O contact 501 , are in a retracted operative orientation.
  • the card present switch assembly 440 In the absence of a card in smart card receiving slot 112 , the card present switch assembly 440 is in its at rest position, as seen in FIG. 4D , and the bent finger 442 is spaced from electrically conductive contact 447 , as seen particularly in enlargement B, which shows a simplified cross section of the bent finger 442 and electrically conductive contact 447 . Bent finger 442 is not resiliently displaced into deforming engagement with electrically conductive contact 447 , and central disk 448 is not in electrical contact with ring 449 causing a smart card not inserted output indication to be provided to tamper alarm circuit 134 .
  • actuation arm 170 In the absence of a card in smart card receiving slot 112 , when actuation arm 170 is in its at rest position, the cam finger portion 612 of the actuation arm 170 is in engagement with recessed region 582 of cam surface 580 defined on cam path defining element 508 . When in this position, actuation arm 170 preferably does not exert any downward pressure on contact block assembly 160 , and thus contact block assembly 160 remains in its upwardly retracted operative orientation, as seen particularly in enlargement C, which is side view illustration, taken along an arrow C.
  • leaf spring 162 In the absence of a card in smart card receiving slot 112 , when actuation arm 170 is in its at rest position and the cam finger portion 612 of the actuation arm 170 is in engagement with recessed region 582 of cam surface 580 defined on cam path defining element 508 , leaf spring 162 is in its extended operative orientation, as seen particularly in enlargement D, which is a cross section taken along lines D-D in FIG. 13A . Leaf spring 162 engages underside surface 562 of lip portion 560 of electrical contact element support 502 and thereby urges electrical contact element support 502 , and thus contact block assembly 160 and electrical contact elements 500 , into their upwardly pivoted operative orientation, which is resistant to tampering.
  • FIG. 13B which shows the operative orientation of the secure smart card connector assembly 120 when a card 690 is fully inserted in smart card receiving slot 112
  • actuation arm 170 is fully rotated in clockwise rotation direction 700 about an actuation arm rotation axis 702 defined by protrusion 316 ( FIG. 4A ) which extends through pivot aperture 604 ( FIG. 11A ) from its at rest position, as seen in FIG. 13A , to a fully rotated position seen in FIG. 13B .
  • engagement finger 766 of mechanical sensor 764 lies outside recess 622 ( FIG.
  • actuation arm 170 engages edge surface 628 of finger portion 630 of actuation arm 170 , as seen particularly in enlargement A, which shows a partially cut away top view of mechanical sensor 764 and recess 622 . It is seen that engagement finger 766 has been pivoted relative to the remainder of mechanical sensor 764 , such that the mechanical sensor is in a second logic state which indicates that electrical contact elements 500 , and specifically at least one I/O contact 501 , are in an extended state.
  • bent finger 442 When a smart card 690 is fully inserted into smart card receiving slot 112 , bent finger 442 is resiliently displaced into deforming engagement with electrically conductive contact 447 , as indicated by an arrow 770 , causing it to contact central disk 448 , as seen particularly in enlargement B, which shows a simplified cross section of the bent finger 442 and electrically conductive contact 447 . Accordingly an electrical connection is made between disk 448 and ring 449 , and thus between edge contacts 450 and 452 , thereby providing a smart card fully inserted output indication to tamper alarm circuit 134 .
  • actuation arm 170 When a smart card 690 is fully inserted in smart card receiving slot 112 , when actuation arm 170 is in its fully rotated position, the cam finger portion 612 of the actuation arm 170 is in engagement with protruding region 586 of cam surface 580 defined on cam path defining element 508 . When in this position, actuation arm 170 preferably exerts downward pressure on contact block assembly 160 , and thus contact block assembly 160 is in its pivotally lowered operative orientation, as seen particularly in enlargement C, which is side view illustration, taken along line C-C.
  • actuation arm 170 When a smart card 690 is fully inserted in smart card receiving slot 112 , actuation arm 170 is in its fully rotated position and the cam finger portion 612 of the actuation arm 170 is in engagement with protruding region 586 of cam surface 580 defined on cam path defining element 508 .
  • Rotation of actuation arm 170 causes downward pivoting of electrical contact element support 502 which overcomes the upward force of leaf spring 162 and underside surface 562 of lip portion 560 of electrical contact element support 502 compresses leaf spring 162 into a compressed operative orientation, as seen particularly in enlargement D, which is a cross section taken along lines D-D in FIG. 13B . In the compressed operative orientation, access to electrical contact elements 500 is blocked by the smart card 690 , which is fully inserted into smart card receiving slot 112 .
  • electrical contact elements 500 When a smart card 690 is fully inserted in smart card receiving slot 112 , when contact block assembly 160 is in its pivotally lowered operative orientation, electrical contact elements 500 , and specifically at least one I/O contact 501 , are at least partly located within smart card receiving slot 112 and in engagement with contact pads 691 on the smart card 690 , as seen particularly in enlargement E, which is taken along arrow E. It is a particular feature of an embodiment of the present invention that only in the presence of a card in smart card receiving slot 112 , are the electrical contact elements 500 , and specifically at least one I/O contact 501 , lowered into conductive engagement with contact pads of the card, thereby making it difficult for a potential hacker to engage the electrical contact elements 500 .
  • an alarm is provided when electrical contact elements 500 are extended into the smart card receiving slot 112 in the absence of a card fully inserted into smart card receiving slot 112 .
  • tamper alarm circuit 134 may be summarized as seen in Table 1 below:

Abstract

A smart card connector including a housing defining a smart card receiving slot communicating with a smart card ingress slit formed in the housing, a plurality of smart card contacts mounted within the housing and being configured for reading contact with a smart card inserted into the slot and a movable smart card contact mounting assembly supporting at least one of the plurality of smart card contacts and for positioning the at least one of the plurality of smart card contacts in a first position, in the absence of a smart card in the slot, and in a second position, different from the first position, when a smart card is fully inserted in the slot, wherein when the at least one of the plurality of smart card contacts is in the first position it is relatively inaccessible to tampering via the smart card ingress slit.

Description

FIELD OF THE INVENTION
The present invention relates to data entry devices generally, particularly to point of sale terminals and more particularly to smart card connector assemblies for point of sale terminals.
BACKGROUND OF THE INVENTION
Various types of smart card connector assemblies for point of sale terminals are known.
SUMMARY OF THE INVENTION
The present invention seeks to provide improved smart card connector assemblies for point of sale terminals.
There is thus provided in accordance with a preferred embodiment of the present invention a smart card connector including a housing defining a smart card receiving slot communicating with a smart card ingress slit formed in the housing, a plurality of smart card contacts mounted within the housing and being configured for reading contact with a smart card inserted into the smart card receiving slot and a movable smart card contact mounting assembly supporting at least one of the plurality of smart card contacts and for positioning the at least one of the plurality of smart card contacts in a first position, in the absence of a smart card in the smart card receiving slot, and in a second position, different from the first position, when a smart card is fully inserted in the smart card receiving slot, wherein when the at least one of the plurality of smart card contacts is in the first position it is relatively inaccessible to tampering via the smart card ingress slit.
In accordance with a preferred embodiment of the present invention the at least one of the plurality of smart card contacts is an I/O contact. Additionally or alternatively, the at least one of the plurality of smart card contacts is configured to be without a hook engageable surface so as to be resistant to engagement therewith and pulling thereof by a tampering instrument inserted into the smart card ingress slit.
Preferably, the smart card connector also includes a smart card contact position sensor operative to sense when the at least one of the plurality of smart card contacts are in the second position. Additionally or alternatively, when the at least one of the plurality of smart card contacts is in the second position it is adapted for physical electrical engagement with contact pads on the smart card.
In accordance with a preferred embodiment of the present invention the smart card connector also includes a smart card insertion sensor operative to sense when a smart card is fully inserted into the smart card receiving slot. Additionally or alternatively, the smart card connector also includes tamper alarm circuitry operative to provide a tamper alarm indication in response to an output of the smart card contact position sensor indicating that at least one of the plurality of smart card contacts is in the second position orientation in the absence of a smart card fully inserted into the smart card receiving slot.
Preferably, the smart card connector also includes a smart card contact position sensor operative to sense when the I/O contact is in the second position. Additionally, the smart card connector also includes a smart card insertion sensor operative to sense when a smart card is fully inserted into the smart card receiving slot and tamper alarm circuitry operative to provide a tamper alarm indication in response to an output of the smart card contact position sensor indicating that the I/O contact is in the second position orientation in the absence of a smart card fully inserted into the smart card receiving slot.
There is also provided in accordance with another preferred embodiment of the present invention a smart card connector including a housing defining a smart card receiving slot communicating with a smart card ingress slit formed in the housing and a plurality of smart card contacts mounted within the housing and being configured for reading contact with a smart card inserted into the smart card receiving slot, at least one of the plurality of smart card contacts being configured without a hook engageable surface so as to be resistant to engagement therewith and pulling thereof by a tampering instrument inserted into the smart card ingress slit.
In accordance with a preferred embodiment of the present invention the at least one of the plurality of smart card contacts is an I/O contact. Additionally, the smart card connector also includes a smart card contact position sensor operative to sense when the I/O contact is in a card reading position.
Preferably, the smart card connector also includes a smart card contact position sensor operative to sense when the at least one of the plurality of smart card contacts are in a card reading position.
In accordance with a preferred embodiment of the present invention when the at least one of the plurality of smart card contacts is in a card reading position it is adapted for physical electrical engagement with contact pads on the smart card.
Preferably, the smart card connector also includes a smart card insertion sensor operative to sense when a smart card is fully inserted into the smart card receiving slot. Additionally, the smart card connector also includes tamper alarm circuitry operative to provide a tamper alarm indication in response to an output of the smart card contact position sensor indicating that at least one of the plurality of smart card contacts is in the card reading position in the absence of a smart card fully inserted into the smart card receiving slot.
Preferably, the smart card connector also includes a smart card contact position sensor operative to sense when the I/O contact is in the card reading position.
In accordance with a preferred embodiment of the present invention the smart card connector also includes a smart card insertion sensor operative to sense when a smart card is fully inserted into the smart card receiving slot and tamper alarm circuitry operative to provide a tamper alarm indication in response to an output of the smart card contact position sensor indicating that the I/O contact is in the card reading position in the absence of a smart card fully inserted into the smart card receiving slot.
There is further provided in accordance with yet another preferred embodiment of the present invention a smart card connector including a housing defining a smart card receiving slot communicating with a smart card ingress slit formed in the housing, a plurality of smart card contacts mounted within the housing and being configured for reading contact with a smart card inserted into the smart card receiving slot, at least one of the plurality of smart card contacts being movable from a relatively non-tamperable position to a relatively tamperable position, a smart card contact position sensor operative to sense when the plurality of smart card contacts are in the tamperable orientation and tamper alarm circuitry operative to provide a tamper alarm indication in response to an output of the smart card contact position sensor indicating that the plurality of smart card contacts are in the tamperable orientation in the absence of a smart card fully inserted into the smart card receiving slot.
In accordance with a preferred embodiment of the present invention the at least one of the plurality of smart card contacts is an I/O contact.
In accordance with a preferred embodiment of the present invention the at least one of the plurality of smart card contacts is configured to be without a hook engageable surface so as to be resistant to engagement therewith and pulling thereof by a tampering instrument inserted into the smart card ingress slit.
Preferably, the smart card connector also includes a smart card contact position sensor operative to sense when the at least one of the plurality of smart card contacts are in the tamperable orientation. Additionally or alternatively, when the at least one of the plurality of smart card contacts is in the tamperable orientation it is adapted for physical electrical engagement with contact pads on the smart card.
In accordance with a preferred embodiment of the present invention the smart card connector also includes a smart card insertion sensor operative to sense when a smart card is fully inserted into the smart card receiving slot.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will be understood and appreciated more fully from the following detailed description, taken in conjunction with the drawings in which:
FIG. 1 is a simplified pictorial illustration of a point of sale terminal constructed and operative in accordance with a preferred embodiment of the present invention;
FIGS. 2A, 2B, 2C, 2D, 2E, 2F and 2G are simplified drawings including, respectively, a perspective view, a top planar view, a bottom planar view, a first side planar view, a second side planar view, a front planar view and a back planar view of a smart card connector assembly constructed and operative in accordance with a preferred embodiment of the invention, which forms part of the point of sale terminal of FIG. 1 and includes an optical sensor;
FIGS. 3A and 3B are simplified exploded view illustrations, taken generally in mutually opposite directions, of the smart card connector assembly of FIGS. 2A-2G;
FIGS. 4A, 4B, 4C, 4D, 4E, 4F, 4G and 4H are simplified drawings including, respectively, a perspective view, a top planar view, a bottom planar view, an upwardly-facing interior sectional view, taken along lines IVD-IVD in FIG. 4A, a first side planar view, a second side planar view, a front planar view and a back planar view of a base element forming part of the smart card connector of FIGS. 2A-3B;
FIGS. 5A, 5B, 5C, 5D, 5E, 5F and 5G are simplified drawings including, respectively, a perspective view, a top planar view, a bottom planar view, a first side planar view, a second side planar view, a front planar view and a back planar view of a contact block assembly forming part of the smart card connector of FIGS. 2A-3B;
FIGS. 6A and 6B are simplified exploded view illustrations, taken generally in mutually opposite directions, of the contact block assembly of FIGS. 5A-5G;
FIGS. 7A, 7B, 7C, 7D, 7E, 7F and 7G are simplified drawings including, respectively, a perspective view, a top planar view, a bottom planar view, a first side planar view, a second side planar view, a front planar view and a back planar view of an electrical contact element forming part of the contact block assembly of FIGS. 5A-6B;
FIGS. 8A, 8B, 8C, 8D, 8E, 8F and 8G are simplified drawings including, respectively, a perspective view, a top planar view, a bottom planar view, a first side planar view, a second side planar view, a front planar view and a back planar view of an electrical contact element support forming part of the contact block assembly of FIGS. 5A-6B;
FIGS. 9A, 9B and 9C are simplified drawings including, respectively, a perspective view, a top planar view and a bottom planar view of a flexible printed circuit element forming part of the contact block assembly of FIGS. 5A-6B;
FIGS. 10A, 10B, 10C, 10D, 10E, 10F and 10G are, respectively, a perspective view, a top planar view, a bottom planar view, a first side planar view, a second side planar view, a front planar view and a back planar view of a cam path defining element forming part of the contact block assembly of FIGS. 5A-6B;
FIGS. 11A, 11B, 11C, 11D, 11E, 11F and 11G are simplified drawings including, respectively, a perspective view, a top planar view, a bottom planar view, a first side planar view, a second side planar view, a front planar view and a back planar view of an actuation arm forming part of the smart card connector of FIGS. 2A-3B;
FIGS. 12A and 12B are simplified perspective view illustrations illustrating a transition of the smart card connector of FIGS. 1-11G from a card not inserted state to a card fully inserted state; and
FIGS. 13A and 13B are simplified perspective view illustrations illustrating a transition of an alternative embodiment of the smart card connector of FIGS. 1-11G from a card not inserted state to a card fully inserted state.
 DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
Reference is now made to FIG. 1, which is a simplified pictorial illustration of a point of sale terminal constructed and operative in accordance with a preferred embodiment of the present invention. As seen in FIG. 1, there is provided a point of sale device 100, which includes a housing 102, a keypad 104 and a display 106. Preferably, the housing 102 defines a magnetic stripe card reading slot 108 and a smart card ingress slit 110 which communicates with a smart card receiving slot 112.
Disposed within housing 102 is a secure smart card connector assembly 120, which is preferably mounted on a printed circuit board 122. It is a particular feature of the present invention that secure smart card connector assembly 120 includes an anti-tampering mechanism which minimizes exposure of smart card reading contacts to physical tampering and preferably also provides a warning of attempted tampering with the smart card reading contacts. Preferably, this anti-tampering mechanism includes a smart card contact position sensor 130, such as an optical sensor or a mechanical sensor, which is operative to sense when the smart card contacts are in a tamperable orientation. Smart card contact position sensor 130 may be, for example, mechanical or optical.
The anti-tampering mechanism also includes a card full insertion sensor 132 (shown in dashed lines in FIG. 1), which is operative to sense when a card is not fully inserted into smart card receiving slot 112.
The anti-tampering mechanism also includes a tamper alarm circuit 134, operative to provide a tamper alarm indication in response to outputs of the smart card contact position sensor 130 and of the card full insertion sensor 132, indicating that the plurality of smart card contacts are in the tamperable orientation in the absence of a smart card fully inserted into said smart card receiving slot 112. Tamper alarm circuit 134 may be embodied in a microprocessor which forms part of a point of sale device and governs the operation thereof.
Reference is now additionally made to FIGS. 2A, 2B, 2C, 2D, 2E, 2F and 2G, which are simplified drawings including, respectively, a perspective view, a top planar view, a bottom planar view, a first side planar view, a second side planar view, a front planar view and a back planar view of the smart card connector assembly 120, which forms part of the point of sale terminal of FIG. 1, and to FIGS. 3A and 3B, which are simplified exploded view illustrations, taken generally in mutually opposite directions, of the smart card connector assembly 120 of FIGS. 2A-2G.
As seen in FIGS. 2A-3B, the smart card connector assembly 120 includes a base element 150, a contact block assembly 160, which is pivotably mounted onto base element 150 and biased by a leaf spring 162, a contact block assembly position sensor 164, which is an embodiment of contact position sensor 130 (FIG. 1A), and which senses the position of the contact block assembly 160 relative to base element 150, and an actuation arm 170, biased by a tension coil spring 172, which governs the position of the contact block assembly 160 relative to base element 150 in response to the presence of a smart card in smart card receiving slot 112. Contact block assembly position sensor 164 senses the rotational position of actuation arm 170, which in turn governs the pivotal orientation of the contact block assembly 160, and is typically an optical sensor 164 as shown. Alternatively, contact position sensor 130 may be a mechanical sensor or any other suitable type of sensor.
Reference is now additionally made to FIGS. 4A, 4B, 4C, 4D, 4E, 4F, 4G and 4H, which are simplified drawings including, respectively, a perspective view, a top planar view, a bottom planar view, an upwardly-facing interior sectional view, taken along lines IVD-IVD in FIG. 4A, a first side planar view, a second side planar view, a front planar view and a back planar view of base element 150, forming part of the smart card connector assembly 120 of FIGS. 2A-3B.
As seen in FIGS. 4A-4H, base element 150 is a generally rectangular element having a top wall portion 200, a bottom wall portion 210, first and second side wall portions 220 and 230, a rear wall portion 240 and a front wall portion 250, which defines a smart card access slit 252 which lies behind and is aligned with smart card ingress slit 110 (FIG. 1) and leads to smart card receiving slot 112, which is defined by interior surfaces of top wall portion 200, bottom wall portion 210, first and second side wall portions 220 and 230 and rear wall portion 240.
As seen particularly in FIGS. 4A and 4B, top wall portion 200 includes a central aperture 254, a first side aperture 260 and a second side aperture 270. Top wall portion 200 also includes a relatively long slit aperture 272 and a pair of relatively short slit apertures 274 and 276. Additionally, top wall portion 200 includes first, second, third and fourth upwardly facing tapered elongate recesses, respectively designated by reference numerals 278, 280, 282 and 284. Further, top wall portion 200 includes first, second, third, fourth and fifth upwardly facing elongate recesses having rounded corners, respectively designated by reference numerals 288, 290, 292, 294 and 296.
It is also seen that top wall portion 200 additionally includes a plurality of relatively large square recesses 298, arranged in a row, a plurality of relatively small square recesses 300, a plurality of relatively large circular recesses 302 and a plurality of relatively small circular recesses 304. It is further seen that an upstanding wall portion 306 is provided and includes a central portion 308, a pair of side portions 310 extending perpendicularly to central portion 308, a pair of intermediate portions 312 extending mutually inwardly from respective side portions 310, parallel to central portion 308, and a pair of end portions 314 extending from intermediate portions 312 perpendicularly to central portion 308. Upstanding wall portion 306 defines a socket 315, which accommodates leaf spring 162.
It is additionally seen that there are provided three generally circular cylindrical upwardly facing protrusions, respectively designated by reference numerals 316, 318 and 320.
As seen particularly in FIG. 4C, bottom wall portion 210 includes four side apertures 350, 352, 354 and 356. Bottom wall portion 210 also includes a pair of mutually spaced U-shaped slits 360 and 362, which surround respective integrally formed spring fingers 364 and 366. Bottom wall portion 210 additionally includes two pairs of mutually spaced parallel slits 370 and 372 which surround respective integrally formed elongate leaf springs 374 and 376.
Additionally, bottom wall portion 210 includes a pair of relatively short slit apertures 384 and 386. Additionally, bottom wall portion 210 includes a plurality of additional apertures designated by reference numerals 388, 390, 392, 394, 396, 398, 400 and 402.
Bottom wall portion 210 includes first, second, third, fourth, fifth and sixth downwardly facing elongate shallow protrusions, respectively designated by reference numerals 418, 420, 422, 424, 426 and 428 and four downwardly facing leg protrusions 430.
As seen particularly in FIG. 4D, there is provided a preferred embodiment of a card full insertion sensor 132 (FIG. 1), in the form of a card present switch assembly 440, which preferably includes a resilient card engagement bent finger 442. Bent finger 442 is preferably integrally formed with a generally planar mounting portion 446, which is mounted onto an inside facing surface of top wall portion 200 of base element 150. Bent finger 442 is normally spaced from an electrically conductive contact 447, preferably in the form of a dome, which is also mounted on an inside facing surface of top wall portion 200, and overlies a pair of mutually spaced electrical conductor pads, preferably, respectively, a central disk 448 surrounded by a ring 449, which is preferably electrically connected to contact 447.
Disk 448 and ring 449 are preferably electrically connected by conductors (not shown) via respective edge contacts 450 and 452 (FIG. 4C) to tamper alarm circuit 134, wherein closing of an electric circuit between disk 448 and ring 449 provides a smart card fully inserted output indication.
Reference is now made to FIGS. 5A, 5B, 5C, 5D, 5E, 5F and 5G, which are simplified drawings including respectively a perspective view, a top planar view, a bottom planar view, a first side planar view, a second side planar view, a front planar view and a back planar view of contact block assembly 160, forming part of the smart card connector of FIGS. 2A-3B, to FIGS. 6A and 6B, which are simplified exploded view illustrations, taken generally in mutually opposite directions, of the contact block assembly of FIGS. 5A-5G, and to FIGS. 7A-10B, which illustrate elements of the contact block assembly 160.
As seen in FIGS. 5A-6B, contact block assembly 160 includes a plurality of electrical contact elements 500, including at least one I/O contact 501, which are flexibly seated in an electrical contact element support 502 and electrically connected, as by soldering, to corresponding contact pads 504 on a flexible printed circuit element 506. A cam path defining element 508 is supported on electrical contact element support 502 and overlies part of flexible printed circuit element 506.
Referring additionally to FIGS. 7A-7G, it is seen that each electrical contact element 500 is a metal element, preferably formed by stamping, and preferably includes a contact pad portion 520, which is configured for soldered attachment to a contact pad 504 on flexible printed circuit element 506. A bent-over tail portion 522 connects contact pad portion 520 to a smart card contact engageable portion 524. It is a particular feature of an embodiment of the present invention that smart card contact engageable portion 524 is configured to be without a hook engageable surface, so as to be resistant to engagement therewith and pulling thereof by a tampering instrument inserted into the smart card ingress slit 110 (FIG. 1).
Smart card contact engageable portion 524 is preferably a side to side symmetric, generally hollow portion having an overall partial disk-like configuration and having a curved outer surface 526. Preferably, the curved outer surface 526 includes a curved, ribbon-like smart card contact engagement surface 530, which extends from bent-over tail portion 522 to a forward end of a top edge 532 of smart card contact engageable portion 524. Smart card contact engagement surface 530 preferably has an overall circular configuration and preferably has a curved cross section, as seen in a sectional illustration forming part of FIG. 7A, taken along the lines A-A in FIG. 7A.
Curved outer surface 526 also includes a pair of curved side surfaces 534 alongside both sides of smart card contact engagement surface 530. Curved outer surface 526 additionally includes a pair of generally flat side surfaces 536, which extend between curved side surfaces 534 and top edge 532.
Referring now specifically to FIGS. 8A-8G, it is seen that electrical contact element support 502 is a generally planar element, preferably injection molded of plastic to define at a first end thereof a pivot axle 550 extending along a pivot axis 552 and including an array of elongate recesses 554, preferably eight in number, each recess configured for accommodating an electrical contact element 500. Electrical contact element support 502 preferably defines at an end thereof opposite to that at which pivot axle 550 is located, a lip portion 560, which is engaged on an underside surface 562 thereof by leaf spring 162 for normally urging electrical contact element support 502 and thus contact block assembly 160 and electrical contact elements 500 into an upwardly pivoted operative orientation, which is resistant to tampering, when a smart card is not fully inserted into smart card receiving slot 112.
Referring now specifically to FIGS. 9A, 9B and 9C, it is seen that flexible printed circuit element 506 includes contact pads 504 on a main portion thereof 570. Flexible printed circuit element 506 also preferably includes an intermediate portion 572 and a tail portion 574 having formed adjacent an edge thereof an array of electrical contact pads 576.
Referring now specifically to FIGS. 10A, 10B, 10C, 10D, 10E, 10F and 10G, which are, respectively, a perspective view, a top planar view, a bottom planar view, a first side planar view, a second side planar view, a front planar view and a back planar view of cam path defining element 508, it is seen that cam path defining element 508 is a generally planar element having a generally planar top surface 579, which is formed with a partially recessed, partially protruding cam surface 580. Cam surface 580 includes three regions, a recessed region 582 having a uniform depth and a region 584 angled with respect to recessed region 582 and defining a ramp extending from recessed region 582 to a protruding region 586, having a uniform height.
Reference is now made to FIGS. 11A, 11B, 11C, 11D, 11E, 11F and 11G, which are simplified drawings including, respectively, a perspective view, a top planar view, a bottom planar view, a first side planar view, a second side planar view, a front planar view and a back planar view of actuation arm 170, forming part of the smart card connector of FIGS. 2A-3B.
As seen in FIGS. 11A-11G, actuation arm 170 comprises first and second elongate arm portions 600 and 602 which extend in a first plane preferably at right angles to each other. A pivot aperture 604 is located at the junction of arm portions 600 and 602 and is arranged for pivotable engagement with upwardly facing protrusion 316 of base element 150. Arm portion 600 terminates in a generally cylindrical payment card engagement protrusion 606, which depends from arm portion 600. Extending sideways and somewhat upwardly from arm portion 600 at an intermediate location therealong is an apertured spring engagement portion 608, which is arranged to be engaged by tension coil spring 172.
Arm portion 602 terminates at one end thereof in a cam arm portion 610, which preferably extends generally perpendicular to arm portion 602 and parallel to arm portion 600 in a second plane, above and parallel to the first plane in which arm portions 600 and 602 are located. As seen particularly in FIG. 11C, cam arm portion 610 terminates in a depending tapered cam finger portion 612 having a generally planar cam engagement surface 614, which is configured for slidable engagement with partially recessed, partially protruding cam surface 580 of cam path defining element 508.
Arm portion 602 terminates at an opposite end thereof in a mechanical sensor toggle engagement finger portion 620, which defines a recess 622 bordered by edge surfaces 624, 626 and 628. Edge surface 628 is preferably in the form of a curved fingertip surface of a finger portion 630.
Overlying finger portion 630, edge surface 628 and part of edge surface 626 is an optical sensor selectable light reflecting finger portion 632, which lies in a third plane, above and parallel to the first plane in which arm portions 600 and 602 are located and below and parallel to the second plane in which cam portion 610 is located, and extends generally parallel to arm portions 600 and 610.
Reference is now made to FIGS. 12A and 12B, which are simplified perspective view illustrations illustrating a transition of the smart card connector of FIGS. 1-11G from a card not inserted state to a card fully inserted state.
As seen in FIG. 12A, where a smart card 690 having contact pads 691 is located outside of smart card receiving slot 112, actuation arm 170 is in its at rest position, as seen in FIG. 2A, and light reflecting finger portion 632 does not overlie the optical sensor 164 and thus does not reflect light emitted thereby by an LED 692 to a detector 694 thereof, as seen particularly in enlargement A, which shows a simplified section of optical sensor 164 and a light beam emanating therefrom which is not reflected by finger portion 632. In this situation, optical sensor 164 is in a first logic state, which indicates to tamper alarm circuit 134 that card engagement contacts 500, and specifically at least one I/O contact 501, are in a retracted operative orientation.
In the absence of a card in smart card receiving slot 112, the card present switch assembly 440 is in its at rest position, as seen in FIG. 4D, and the bent finger 442 is spaced from electrically conductive contact 447, as seen particularly in enlargement B, which shows a simplified cross section of the bent finger 442 and electrically conductive contact 447. Bent finger 442 is not resiliently displaced into deforming engagement with electrically conductive contact 447, and central disk 448 is not in electrical contact with ring 449 causing a smart card not inserted output indication to be provided to tamper alarm circuit 134.
In the absence of a card in smart card receiving slot 112, when actuation arm 170 is in its at rest position, the cam finger portion 612 of the actuation arm 170 is in engagement with recessed region 582 of cam surface 580 defined on cam path defining element 508. When in this position, actuation arm 170 preferably does not exert any downward pressure on contact block assembly 160, and thus contact block assembly 160 remains in its upwardly retracted operative orientation, as seen particularly in enlargement C, which is side view illustration, taken along lines C-C in FIG. 12A.
In the absence of a card in smart card receiving slot 112, when actuation arm 170 is in its at rest position and the cam finger portion 612 of the actuation arm 170 is in engagement with recessed region 582 of cam surface 580 defined on cam path defining element 508, leaf spring 162 is in its extended operative orientation, as seen particularly in enlargement D, which is a cross section taken along lines D-D in FIG. 12A. Leaf spring 162 engages underside surface 562 of lip portion 560 of electrical contact element support 502 and thereby urges electrical contact element support 502, and thus contact block assembly 160 and electrical contact elements 500, into their upwardly pivoted operative orientation, which is resistant to tampering.
In the absence of a smart card 690 in smart card receiving slot 112, when contact block assembly 160 is in its upwardly retracted operative orientation, electrical contact elements 500, and specifically at least one I/O contact 501, are nearly completely retracted upwardly out of smart card receiving slot 112, as seen particularly in enlargement E, which is taken along arrow E. It is a particular feature of an embodiment of the present invention that in the absence of a card in smart card receiving slot 112, the electrical contact elements 500, and specifically at least one I/O contact 501, are nearly completely retracted upwardly out of smart card receiving slot 112, thereby making it difficult for a potential hacker to engage the electrical contact elements 500.
It is a further particular feature of an embodiment of the present invention that in addition to the retraction of the electrical contact elements 500 when a card is not fully inserted into smart card receiving slot 112, the particular configuration of the electrical contact elements 500, so as to be without a hook engageable surface, makes it difficult to tamper with the electrical contact elements 500 in general and the one or more I/O contact elements 501 in particular.
Turning now to FIG. 12B, which shows the operative orientation of the secure smart card connector assembly 120 when a smart card 690 is fully inserted in smart card receiving slot 112, actuation arm 170 is fully rotated in a clockwise rotation direction 700 about an actuation arm rotation axis 702 defined by protrusion 316 (FIG. 4A) which extends through pivot aperture 604 (FIG. 11A) from its at rest position, as seen in FIGS. 2A and 12A, to a fully rotated position seen in FIG. 12B. When actuation arm 170 is in this fully rotated position, as seen particularly in enlargement A, light reflecting finger portion 632 overlies the optical sensor 164 and thus a light beam emanating from LED 692 of optical sensor 164 is reflected by finger portion 632 to detector 694 of optical sensor 164. In this situation, optical sensor 164 is in a second logic state, which indicates to tamper alarm circuit 134 that card engagement contacts 500, and specifically at least one I/O contact 501, are in an extended operative orientation.
When a smart card 690 is fully inserted into smart card receiving slot 112, bent finger 442 is resiliently displaced into deforming engagement with electrically conductive contact 447, as indicated by an arrow 710, causing it to contact central disk 448, as seen particularly in enlargement B, which shows a simplified cross section of the bent finger 442 and electrically conductive contact 447. Accordingly, an electrical connection is made between disk 448 and ring 449, and thus between edge contacts 450 and 452, thereby providing a smart card fully inserted output indication to tamper alarm circuit 134.
When a smart card 690 is fully inserted in smart card receiving slot 112, and actuation arm 170 is in its fully rotated position, the cam finger portion 612 of the actuation arm 170 is in engagement with protruding region 586 of cam surface 580 defined on cam path defining element 508. When in this position, actuation arm 170 preferably exerts downward pressure on contact block assembly 160, and thus contact block assembly 160 is in its pivotally lowered operative orientation, as seen particularly in enlargement C, which is a side view illustration, taken along lines C-C in FIG. 12B.
When a smart card 690 is fully inserted in smart card receiving slot 112, actuation arm 170 is in its fully rotated position and the cam finger portion 612 of the actuation arm 170 is in engagement with protruding region 586 of cam surface 580 defined on cam path defining element 508. Rotation of actuation arm 170 causes downward pivoting of electrical contact element support 502 which overcomes the upward force of leaf spring 162 and underside surface 562 of lip portion 560 of electrical contact element support 502 compresses leaf spring 162 into a compressed operative orientation, as seen particularly in enlargement D, which is a cross section taken along lines D-D. In the compressed operative orientation, access to electrical contact elements 500 is blocked by the smart card 690, which is fully inserted into smart card receiving slot 112.
When a smart card 690 is fully inserted in smart card receiving slot 112, contact block assembly 160 is in its pivotally lowered operative orientation and electrical contact elements 500, and specifically at least one I/O contact 501, are at least partly located within smart card receiving slot 112 and in engagement with contact pads 691 on the smart card 690, as seen particularly in enlargement E, which is taken along arrow E. It is a particular feature of an embodiment of the present invention that only in the presence of a card in smart card receiving slot 112, are the electrical contact elements 500, and specifically at least one I/O contact 501, lowered into conductive engagement with contact pads of the card, thereby making it difficult for a potential hacker to engage the electrical contact elements 500.
It is a further particular feature of an embodiment of the present invention that in addition to the lowering and extension of the electrical contact elements 500 into the smart card receiving slot 112 only when a smart card is fully inserted into smart card receiving slot 112, the particular configuration of the electrical contact elements 500, so as to be without a hook engageable surface, makes it difficult to tamper with the electrical contact elements 500 in general and the one or more I/O contact elements 501 in particular.
Reference is now made to FIGS. 13A and 13B, which are simplified perspective view illustrations illustrating a transition of the smart card connector of an alternative embodiment of the invention from a card not inserted state to a card fully inserted state. The alternative embodiment of the invention is generally identical to that described hereinabove with reference to FIGS. 1-12B with the sole difference being that the optical sensor 164 is replaced by a mechanical sensor 764 having an engagement finger 766.
As seen in FIG. 13A, where a smart card 690 having contact pads 691 is located outside of smart card receiving slot 112, actuation arm 170 is in its at rest position and engagement finger 766 of mechanical sensor 764 lies within recess 622 (FIG. 11C) of actuation arm 170, as seen particularly in enlargement A, which shows a partially cut away top view of mechanical sensor 764 and recess 622. When engagement finger 766 is in this orientation, mechanical sensor 764 is in a first logic state, which indicates to tamper alarm circuit 134 that card engagement contacts 500, and specifically at least one I/O contact 501, are in a retracted operative orientation.
In the absence of a card in smart card receiving slot 112, the card present switch assembly 440 is in its at rest position, as seen in FIG. 4D, and the bent finger 442 is spaced from electrically conductive contact 447, as seen particularly in enlargement B, which shows a simplified cross section of the bent finger 442 and electrically conductive contact 447. Bent finger 442 is not resiliently displaced into deforming engagement with electrically conductive contact 447, and central disk 448 is not in electrical contact with ring 449 causing a smart card not inserted output indication to be provided to tamper alarm circuit 134.
In the absence of a card in smart card receiving slot 112, when actuation arm 170 is in its at rest position, the cam finger portion 612 of the actuation arm 170 is in engagement with recessed region 582 of cam surface 580 defined on cam path defining element 508. When in this position, actuation arm 170 preferably does not exert any downward pressure on contact block assembly 160, and thus contact block assembly 160 remains in its upwardly retracted operative orientation, as seen particularly in enlargement C, which is side view illustration, taken along an arrow C.
In the absence of a card in smart card receiving slot 112, when actuation arm 170 is in its at rest position and the cam finger portion 612 of the actuation arm 170 is in engagement with recessed region 582 of cam surface 580 defined on cam path defining element 508, leaf spring 162 is in its extended operative orientation, as seen particularly in enlargement D, which is a cross section taken along lines D-D in FIG. 13A. Leaf spring 162 engages underside surface 562 of lip portion 560 of electrical contact element support 502 and thereby urges electrical contact element support 502, and thus contact block assembly 160 and electrical contact elements 500, into their upwardly pivoted operative orientation, which is resistant to tampering.
In the absence of a smart card 690 in smart card receiving slot 112, when contact block assembly 160 is in its upwardly retracted operative orientation, electrical contact elements 500, and specifically at least one I/O contact 501, are nearly completely retracted upwardly out of smart card receiving slot 112, as seen particularly in enlargement E, which is taken along arrow E. It is a particular feature of an embodiment of the present invention that in the absence of a card in smart card receiving slot 112, the electrical contact elements 500, and specifically at least one I/O contact 501, are nearly completely retracted upwardly out of smart card receiving slot 112, thereby making it difficult for a potential hacker to engage the electrical contact elements 500.
It is a further particular feature of an embodiment of the present invention that in addition to the retraction of the electrical contact elements 500 when a card is not fully inserted into smart card receiving slot 112, the particular configuration of the electrical contact elements 500, so as to be without a hook engageable surface, makes it difficult to tamper with the electrical contact elements 500 in general and the one or more I/O contact elements 501 in particular.
Turning now to FIG. 13B, which shows the operative orientation of the secure smart card connector assembly 120 when a card 690 is fully inserted in smart card receiving slot 112, actuation arm 170 is fully rotated in clockwise rotation direction 700 about an actuation arm rotation axis 702 defined by protrusion 316 (FIG. 4A) which extends through pivot aperture 604 (FIG. 11A) from its at rest position, as seen in FIG. 13A, to a fully rotated position seen in FIG. 13B. When actuation arm 170 is in this fully rotated position engagement finger 766 of mechanical sensor 764 lies outside recess 622 (FIG. 11C) of actuation arm 170 and engages edge surface 628 of finger portion 630 of actuation arm 170, as seen particularly in enlargement A, which shows a partially cut away top view of mechanical sensor 764 and recess 622. It is seen that engagement finger 766 has been pivoted relative to the remainder of mechanical sensor 764, such that the mechanical sensor is in a second logic state which indicates that electrical contact elements 500, and specifically at least one I/O contact 501, are in an extended state.
When a smart card 690 is fully inserted into smart card receiving slot 112, bent finger 442 is resiliently displaced into deforming engagement with electrically conductive contact 447, as indicated by an arrow 770, causing it to contact central disk 448, as seen particularly in enlargement B, which shows a simplified cross section of the bent finger 442 and electrically conductive contact 447. Accordingly an electrical connection is made between disk 448 and ring 449, and thus between edge contacts 450 and 452, thereby providing a smart card fully inserted output indication to tamper alarm circuit 134.
When a smart card 690 is fully inserted in smart card receiving slot 112, when actuation arm 170 is in its fully rotated position, the cam finger portion 612 of the actuation arm 170 is in engagement with protruding region 586 of cam surface 580 defined on cam path defining element 508. When in this position, actuation arm 170 preferably exerts downward pressure on contact block assembly 160, and thus contact block assembly 160 is in its pivotally lowered operative orientation, as seen particularly in enlargement C, which is side view illustration, taken along line C-C.
When a smart card 690 is fully inserted in smart card receiving slot 112, actuation arm 170 is in its fully rotated position and the cam finger portion 612 of the actuation arm 170 is in engagement with protruding region 586 of cam surface 580 defined on cam path defining element 508. Rotation of actuation arm 170 causes downward pivoting of electrical contact element support 502 which overcomes the upward force of leaf spring 162 and underside surface 562 of lip portion 560 of electrical contact element support 502 compresses leaf spring 162 into a compressed operative orientation, as seen particularly in enlargement D, which is a cross section taken along lines D-D in FIG. 13B. In the compressed operative orientation, access to electrical contact elements 500 is blocked by the smart card 690, which is fully inserted into smart card receiving slot 112.
When a smart card 690 is fully inserted in smart card receiving slot 112, when contact block assembly 160 is in its pivotally lowered operative orientation, electrical contact elements 500, and specifically at least one I/O contact 501, are at least partly located within smart card receiving slot 112 and in engagement with contact pads 691 on the smart card 690, as seen particularly in enlargement E, which is taken along arrow E. It is a particular feature of an embodiment of the present invention that only in the presence of a card in smart card receiving slot 112, are the electrical contact elements 500, and specifically at least one I/O contact 501, lowered into conductive engagement with contact pads of the card, thereby making it difficult for a potential hacker to engage the electrical contact elements 500.
It is a further particular feature of an embodiment of the present invention that in addition to the lowering and extension of the electrical contact elements 500 into the smart card receiving slot 112 only when a smart card is fully inserted into smart card receiving slot 112, the particular configuration of the electrical contact elements 500, so as to be without a hook engageable surface, makes it difficult to tamper with the electrical contact elements 500 in general and the one or more I/O contact elements 501 in particular.
It is an additional particular feature of an embodiment of the present invention that an alarm is provided when electrical contact elements 500 are extended into the smart card receiving slot 112 in the absence of a card fully inserted into smart card receiving slot 112.
Preferably the alarm logic provided by tamper alarm circuit 134 may be summarized as seen in Table 1 below:
TABLE 1
CARD PRESENT CONTACT ELEMENTS
IN SLOT EXTENDED INTO SLOT ALARM
(SENSOR 132) (SENSOR 130) YES/NO
YES NO YES
YES YES NO
NO NO NO
NO YES YES
It will be appreciated by persons skilled in the art that the present invention is not limited by what has been particularly claimed and includes both combinations and subcombinations of features described and shown hereinabove as well as modifications thereof which are not in the prior art.

Claims (27)

The invention claimed is:
1. A smart card connector comprising:
a housing defining a smart card receiving slot communicating with a smart card ingress slit formed in said housing;
a plurality of smart card contacts mounted within said housing and being configured for reading contact with a smart card inserted into said smart card receiving slot; and
a movable smart card contact mounting assembly supporting at least one of said plurality of smart card contacts and for positioning said at least one of said plurality of smart card contacts in a first position, in the absence of a smart card in said smart card receiving slot, and in a second position, different from said first position, when a smart card is fully inserted in said smart card receiving slot, wherein when said at least one of said plurality of smart card contacts is in said first position it is relatively inaccessible to tampering via said smart card ingress slit.
2. A smart card connector according to claim 1 and wherein said at least one of said plurality of smart card contacts is an I/O contact.
3. A smart card connector according to claim 2 and also comprising:
a smart card contact position sensor operative to sense when said I/O contact is in said second position.
4. A smart card connector according to claim 3 and also comprising:
a smart card insertion sensor operative to sense when a smart card is fully inserted into said smart card receiving slot and
tamper alarm circuitry operative to provide a tamper alarm indication in response to an output of said smart card contact position sensor indicating that said I/O contact is in said second position orientation in the absence of a smart card fully inserted into said smart card receiving slot.
5. A smart card connector according to claim 1 and wherein said at least one of said plurality of smart card contacts is configured to be without a hook engageable surface so as to be resistant to engagement therewith and pulling thereof by a tampering instrument inserted into said smart card ingress slit.
6. A smart card connector according to claim 1 and also comprising:
a smart card contact position sensor operative to sense when said at least one of said plurality of smart card contacts are in said second position.
7. A smart card connector according to claim 6 and also comprising:
a smart card insertion sensor operative to sense when a smart card is fully inserted into said smart card receiving slot.
8. A smart card connector according to claim 7 and also comprising:
tamper alarm circuitry operative to provide a tamper alarm indication in response to an output of said smart card contact position sensor indicating that at least one of said plurality of smart card contacts is in said second position orientation in the absence of a smart card fully inserted into said smart card receiving slot.
9. A smart card connector according to claim 1 and wherein when said at least one of said plurality of smart card contacts is in said second position it is adapted for physical electrical engagement with contact pads on said smart card.
10. A smart card connector according to claim 1 and also comprising:
a smart card insertion sensor operative to sense when a smart card is fully inserted into said smart card receiving slot.
11. A smart card connector comprising:
a housing defining a smart card receiving slot communicating with a smart card ingress slit formed in said housing; and
a plurality of smart card contacts mounted within said housing and being configured for reading contact with a smart card inserted into said smart card receiving slot, at least one of said plurality of smart card contacts being configured without a hook engageable surface so as to be resistant to engagement therewith and pulling thereof by a tampering instrument inserted into said smart card ingress slit.
12. A smart card connector according to claim 11 and wherein said at least one of said plurality of smart card contacts is an I/O contact.
13. A smart card connector according to claim 11 and also comprising:
a smart card contact position sensor operative to sense when said at least one of said plurality of smart card contacts are in a card reading position.
14. A smart card connector according to claim 13 and also comprising:
a smart card insertion sensor operative to sense when a smart card is fully inserted into said smart card receiving slot.
15. A smart card connector according to claim 14 and also comprising:
tamper alarm circuitry operative to provide a tamper alarm indication in response to an output of said smart card contact position sensor indicating that at least one of said plurality of smart card contacts is in said card reading position in the absence of a smart card fully inserted into said smart card receiving slot.
16. A smart card connector according to claim 12 and also comprising:
a smart card contact position sensor operative to sense when said I/O contact is in a card reading position.
17. A smart card connector according to claim 16 and also comprising:
a smart card insertion sensor operative to sense when a smart card is fully inserted into said smart card receiving slot; and
tamper alarm circuitry operative to provide a tamper alarm indication in response to an output of said smart card contact position sensor indicating that said I/O contact is in said card reading position in the absence of a smart card fully inserted into said smart card receiving slot.
18. A smart card connector according to claim 11 and wherein when said at least one of said plurality of smart card contacts is in a card reading position it is adapted for physical electrical engagement with contact pads on said smart card.
19. A smart card connector according to claim 18 and also comprising:
a smart card contact position sensor operative to sense when said I/O contact is in said card reading position.
20. A smart card connector according to claim 11 and also comprising:
a smart card insertion sensor operative to sense when a smart card is fully inserted into said smart card receiving slot.
21. A smart card connector comprising:
a housing defining a smart card receiving slot communicating with a smart card ingress slit formed in said housing;
a plurality of smart card contacts mounted within said housing and being configured for reading contact with a smart card inserted into said smart card receiving slot, at least one of said plurality of smart card contacts being movable from a relatively non-tamperable position to a relatively tamperable position;
a smart card contact position sensor operative to sense when said plurality of smart card contacts are in said tamperable orientation; and
tamper alarm circuitry operative to provide a tamper alarm indication in response to an output of said smart card contact position sensor indicating that said plurality of smart card contacts are in said tamperable orientation in the absence of a smart card fully inserted into said smart card receiving slot.
22. A smart card connector according to claim 21 and wherein said at least one of said plurality of smart card contacts is an I/O contact.
23. A smart card connector according to claim 21 and wherein said at least one of said plurality of smart card contacts is configured to be without a hook engageable surface so as to be resistant to engagement therewith and pulling thereof by a tampering instrument inserted into said smart card ingress slit.
24. A smart card connector according to claim 21 and also comprising:
a smart card contact position sensor operative to sense when said at least one of said plurality of smart card contacts are in said tamperable orientation.
25. A smart card connector according to claim 24 and also comprising:
a smart card insertion sensor operative to sense when a smart card is fully inserted into said smart card receiving slot.
26. A smart card connector according to claim 21 and wherein when said at least one of said plurality of smart card contacts is in said tamperable orientation it is adapted for physical electrical engagement with contact pads on said smart card.
27. A smart card connector according to claim 21 and also comprising:
a smart card insertion sensor operative to sense when a smart card is fully inserted into said smart card receiving slot.
US15/168,966 2016-05-31 2016-05-31 Smart card connector Active US9715603B1 (en)

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US15/168,966 US9715603B1 (en) 2016-05-31 2016-05-31 Smart card connector
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BR122020010433A BR122020010433A8 (en) 2016-05-31 2017-05-29 SMART CARD CONNECTOR SET
BR102017011238-1A BR102017011238A2 (en) 2016-05-31 2017-05-29 SMART CARD CONNECTOR
EP17173857.8A EP3252653B1 (en) 2016-05-31 2017-05-31 Smart card connector
EP17173858.6A EP3252654B1 (en) 2016-05-31 2017-05-31 Smart card connector and method of its operation
EP22157228.2A EP4030336A1 (en) 2016-05-31 2017-05-31 Smart card connector
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US9886601B2 (en) 2018-02-06
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EP3252654A1 (en) 2017-12-06
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